Sig Sauer

Sig Sauer covers more ground than almost any other maker here — pistols, rifles, suppressors, optics and ammunition, all in-house. Winning the US Army handgun contract with the M17 turned the P320 into one of the most widely carried pistols in the country.

The P320's serialised chassis means grip size and slide length are changeable without buying another gun, which is genuinely useful if your hands and the standard grip disagree. The P365 line did the same thing for concealed carry, fitting double-stack capacity into a frame people will actually wear all day.